Improvement in mechanisms for stripping the top-flats of carding-machines



4 Sneets-Sheet 1.

Mechanism for Strippi he Top Plats of Carding- M ines. NO. 222,812. Patented D80. 23, 1879.

Yugfl Wfin 9 55% v \mexhor nan m 4 Sheets-Sheet 2.. G. H. CHANDLER. Mechanism for Stripping the Top Plats of Gar'ding- Machines. No. ZfiEgBIZ. Patented Dec; 23, I879.

' A l I 1| WI l I 11m 4SheetsShet3. G. H. CHANDLER. Mechanism for Stripping the Top Flats of Garding- Machines. No, 222,812. Patented Dec. 23, 1879.

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- 4 Sheets-Sheet 4.

1 Dmfl W T D ,N At Hg n -l w l S o f m Machines. No. 222,812.

Patented Dec. 23, 1879.

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ILHHERS. PHOTO'LITBOGRAPHER. WASHINGTON. D. Q

UNITED STATES PATENT OFFIGE.

GEORGE H. CHANDLER, OF

LOWELL, MASSACHUSETTS.

IMPROVEMENT IN MECHANISMS FOR STRIPPING THE TOP-FLATS OF CARDING-MACHINES.

Specification forming part of Letters Patent N 0. 222.812, dated December 23, 1879; application filed September 27, 1877.

To all whom it may concern Be it known that I, GEORGE H. CHANDLER, of Lowell, in the county of Middlesex and State of Massachusetts, have invented an Improvement in the Mechanism for Stripping the Top- Flats of Oarding-lvlachines, of which the following is a specification.

The object of my invention is to provide a device which may readily be applied to the stripping mechanism now employed to operate and drive it as slowly as may be desirable during the passage of the stripper from one flat to another, but at a greatly-accelerated speed duringthe operation of raisin gand stripping the flat, so that while the flats are stripped much less frequently than at present they are stripped much more quickly, thus allowing each flat to perform its function of carding to the best advantage, while stripping so quickly that any considerable accumulation of cotton between the flats in the space from which the flat being stripped is taken is prevented.

My invention consists in applying to cardstrippers certain mechanism, hereinafter described, adapted to drive the ordinary stripping mechanism at different rates of speedthat is, at a greatly-accelerated speed during the operation of raising and stripping the flat, and at a inuch-retarded rate during the passage of the stripper from one flat to another. To accomplish this I provide a mechanism which can be attached to the ordinary stripping mechanism to drive the cam-wheel which controls the lifting of the flats and the stripping of the cards, which can be so regulated and controlled as to drive the cam-wheel and connected parts at one time slow and at another fast. This mechanism I regulate, govern, and control by a mechanism connected to the cam-wheel described above, which, at regular alternate intervals, actuates certain parts of the mechanism last previously described, so that it shall drive the cam-wheel mentioned in the manner described.

These mechanisms forming my device are so adjusted and arranged with respect to one another that the cam-wheel which operates the lifting devices of the flats and moves the stripper moves slowly during all that part of its revolution which occurs while the stripperbar with its attached parts is advancing from oneflat to the other, and rapidly while lifting the flat-strippin g and replacing it.

By my arrangement of the governing or regulating part of the mechanism the intermittent part, or that which receives the regular 6 is a rear view of a part of the wheel B, showing the attached locking and unlocking mechanisms of the wheel 13. Fig. 7 shows the operating bar and cams. Fig. 8 is an axial section through the wheels A B.

X is the main-cylinder shaft. S S are the flats or top-cards of the machine. N is one of the arms to which the stripper is attached. M is the cam-wheel which operates the stripper and raises the cards. These several parts 0perate and the whole mechanism travels back and forth on the circle T in the usual manner.

A is an internally-toothed wheel having the pulley a cast upon its outer shell or otherwise attached to it. This wheel turns loosely on the shaft X, and its rim abuts closely, but loosely, against a corresponding internallytoothed wheel, B, which also turns loosely on the shaft X, and which forms a closed space, protecting the internal gears. Within this closed space I place an eccentric, G, rigidly attached to the shaft X, and on this eccentric I place the loose planet-wheel D, having teeth on its external surface. The eccentric CI and planet-wheel D are equal in width to the space I between the shells of the outer wheels,.A B, so that the teeth on the wheel D fit into and engage with the internal teeth of both wheels A and B simultaneously. These wheelsA and B are provided with adifterent number of teeth,

and 1 deem it of the best advantage for this purpose to make a difference of one tooth, giving the wheel B twenty teeth and the wheel A twentyone. There is, consequently, when the Wheel B is kept from revolving at each revolution of the shaft and eccentric, a rotary motion given to the wheel A by the action of the planet-wheel D to the extent of one tooth or the oue-twenty-first part of one revolution.

As it is necessary that the wheel A, having the bel t-pulley attached thereto, should receive the rotary motion, I attach to the wheel B a pivoted stop, E, the upper spur of which projects, when the stop is raised, against a stud, e, fixed on the frame K, which swings upon a center common to that of the shaft X, and can ries upon it the pulley H, cams M and G G, and other attached parts of the stripping mechanism. When the stripper is passing from one flat to another this stud e and stop E prevent the wheel B from turning, and cause it to act as a fulcrum, on which the planet-wheel D, actuated by the shaft X and eccentric G, acts to move the wheel A in the same direction as the shaft X, which wheelA, as it advances only one tooth for each revolution of the shaft X, turns very slowly and causes the stripping mechanism to move from flat to flat at a correspondingly slow rate.

Y is the shaft or stud on which the usual cam-wheel of the stripper M turns. 011 this shaft I place one end of a slide-bar, P, the shaft passing through a slot in the bar, which will just receive it widthwise, but is elongated lengthwise of the bar, to permit the necessary motion of the latter,.which is moved up and down longitudinally by means of the pin 0 on the bar P and the cam G G, which is attached to and rotates with the wheel M. Each revolution of this wheel M brings the parts G and G successively in contact with the pin 0, the part G raising the bar longitudinally and the part G forcing it down. The lower end of this bar extends below the stop E, sliding upon the stud z, and is provided with two projecting pins, 7' 1*, one of which, 1', is so placed that when the part G of the cam presses down the bar the pin 0" presses down the pivoted stop E and releases it from the stud a, while the other pin, 1", is so placed that when the bar is raised by the part G of the cam G G it (the pin 9") raises the stop so that it engages with the stud 0 again.

The pivoted stop E is held in position, either up or down, by means of the spring-bolt d on the stop E and the latch I), fixed to the wheel B. This pivoted stop E serves not only to holdthe wheel B from turning, so that it will act as a fulcrum for the planet-wheel to revolve the wheel A, but it also engages with a tooth upon a rachet-wheel, F, keyed to the shaftX behind the wheel B, at the instant when the bar P has unlatched it from the stop 0, and thus serves as a locking device to lock the wheel B to the shaft and cause it to rotate with the shaft X.

The eccentric and planet wheel also act as a pulley a to the wheel B, thus driving the pulley a at the same rate as the shaft X. By these means, if one of these wheels Aor B is locked to the shaft, the two are locked together and revolve with the shaft. This result is accomplished whenever the revolution of the camwheel M brings the part G of the cam G G in contact with the pin 0, so as to force the bar down, thus releasing the stop E from the stud e, and dropping it so as to engage with a tooth *ofthe ratchet-wheel F.

It will be observed that the pivoted stop E is held in its place when engaged with the ratchetwheel F, as well as when engaged with 'the stud e, by the spring-bolt d engaging with one or the other notch in the latch b.

The result of the pulley a being locked to the shaft X through the wheels A B D, stop E, and ratchet F is that the pulley, being driven at the same speed as the shaft X, instead of only one tooth of wheel A at each revolution of the shaft, the whole stripping mechanism is driven at a high rate of speed when a fiat is being stripped.

The movements of the bar P are so timed as to lock and unlock the wheel B alternately from the stud e and ratchet-wheel F, to move the stripping mechanism slowly forward from flat to flat, and to lift, strip, and replace each flat rapidly, as above described.

The operation of the stripping mechanism is as follows: The cam-wheel M moves the mechanism from fiat to flat, being driven by the belt R and pulley H in the usual manner; but as the pulley a, which is attached to the wheel A, is advanced only one tooth at each' revolution of the shaft X, the belt R and pulley H, and, consequently, the cam-wheel M,

may obviouslybe made as slow as desirable by changing the relative number of teeth in the wheels A and B. The part G of the cam G G is so placed on the wheel M that when the cams on the inside of the wheel M begin to raise or are about to raise a flat the part G of the cam comes in contact with the pin 0 and presses the bar down, releasing the pivoted stop E from the stud e by means of the pin r. As soon as the stop E is depressed its lower shoulder is caught by the ratchetwheel F, and the two wheels A and B are locked to and revolve with the same speed as the shaft X, carrying the belt R, pulley H, and, consequently, the whole stripping mechanism at this greatly-accelerated speed, or at the full speed of the shaft X. The flat is therefore "aised and stripped with great rapidity. flThe psrt G of the cam G G is so placed 1 lative to the flat-replacing cams as to immediately raise the slide-bar as soon as each fiat is replaced. The raising of the bar disengages. the stop E from the ratchet-wheel F, unlocking the wheels A and B from the shaft X, and the one hating the greatest resistance to overcome acts as a fulcrum to advance the other in an oppos'te direction. While the stop E is locking mechanism to lock the wheel A and away from the stud a this resistance is, of

are moved at an extremely slow rate, which course, on the wheel A, to. which the stripping mechanism is connected, and consequently this wheel A acts as a fulcrum to revolve the wheel B till the stop E comes in contact with the stud 6, when it in turn immediately becomes the fulcrum, and the wheel A and stripping mechanism are rotated at the slow rate of one tooth for each revolution of the shaft.

' The time occupied by the stripping mechanism in passingfrom one fiat to another is much greater than heretofore. This slow motion allows the flats to do their work much more effectively and economically, eifectin g a saving in the amount of carded cotton which has to be worked over from the picker of more than twenty-five per cent, while the defects heretofore arising from slow stripping are Wholly obviated.

My device may be readily and cheaply applied to any of the card-strippers now in use.

I claim as new and of my invention- 1. The combination, with the wheel B, provided with the latch 12, the shaft X, and ratchet F, of the pivoted stop E, having the springbolt (1, stud e, and means for actuating said stop E, whereby such stop is brought into engagement alternately with the stud c and ratchet F, substantially as set forth.

2. The combination, with the shaft X, the eccentric G, and gear-wheel D, of internallytoothed wheels A and B, one of which is provided with a belt-pulley and mechanism to hold the other periodically to the shaft and release it therefrom, substantially as described.

3. The combination, with the shaft X, internal gear-wheels, A and B, eccentric G, gearwheel D, and ratchet-wheel F, of the bar P, a stop applied to one of said wheels, and means for operating said bar P, whereby the said wheels A and B are locked to and released from the shaft X at certain determinate periods,

substantially as specified.

4. The combination, with the shaft X, gearwheel B, stud Y, and cam G G, of the bar P, provided with the pins 0, r, and 1", and the pivoted stop E, and means for rotating the said cam, substantially as described.

5. The combination, withthe shaft X, eccentric C, planet-wheel D and internally-toothed wheels A and B, of mechanism for automatically locking said wheels A and B to and unlocking them from the shaft X alternately, substantially as set forth.

6. The combination, with the shaft X, eccentric C, ratchet F, planet-wheel D, and internally-toothed wheels A and B, one of which is provided with a belt-pulley, of a stud, c, a stop, and means for actuating said stop, whereby the same is caused to engage alternately with the stud e and ratchet-wheel F, substantially' as described.

7. The combination, with the shaft X, cam M, stripper-arm N, cam G G, and bar P, provided with the pin 0; of the wheel A and mechanism actuated by said bar P for alternately looking to and unlocking from the shaft X the wheel A, whereby the proper variable movements are imparted to the stripper-arm, substantially as described.

8. The combination, with the driving-shaft X, strippingarm N, and frame K, of the camwheel M, cam G G, bar P, and mechanism for imparting to said cam-wheel a variable movement, whereby, with each revolution of the cam-wheel, the cam G G is caused to impart to the bar P two movements, and the speed of the cam-wheel, through its operating mechanism, is thereby changed, while the strippingarm N is moved to strip the flat between the movements of the said bar, substantially as described.

9. The combination of the shaft X, the pulley at, the belt R, the pulley H, the cam M, the cam G G, bar P, and an intermediate speedregulating mechanism operated by the latter, which periodically changes the speed of the pulley H, substantially as described.

' GEO. H. CHANDLER.

Witnesses:

DAVID HALL Bron, J AS. A. RICE. 

